Marley's music (6)
I believe the answer is:
reggae
'marley's music' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for reggae that I've seen before include "West Indian music with strong subsidiary beat" , "A Caribbean music style" , "Style of music originating in West Indies" , "W.I. music" , "Popular music of the West Indies" .)